Driving-mechanism fob sewing and other like machines



M. AXFLROD. DRIVING MECHANISM FOR SEWING AND OTHER LIKE MACHINES.APPLICATION FILED OCT- 30, 1918.

1,320,194. Patentd Oct. 28,1919.

.FIGEZ- INVENTOR MEYER, AXILR OID, READING, PENNSYLVANIA.

I DRIVING MEcHANisM ron'sEwINe AND ornna LIKE MACHINES.

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed October 30,1918. Serial No. 260,258. I

To all whom it may concern. I j

Be it known that I, MEYER .AxiLaon, a citizen of the United States, anda resident of Reading, in the county of Berks-and State of Pennsylvania,have invented "an Improvement in Driving Mechanism for Sewing andotherlike Machines, of which the following'is a specification.

My invention relates to improvements in (lIlVIIlg mechanism for drivlnand operat- 1n sewing mach nes and t er l1'ke'ma chmes to which it isadapted.

. The object of my invention is tofsimplify the Construction of suchdevices by reducing the number of parts of which such mechanism iscomposed and by producingthe same in a more compact form.'

A further object of my invention'is to eliminate gears and also toprovide means whereby the speed. of operation of the machine or'machines operated and driven by the said mechanism may be readily vvaried and controlled.

' should behad to the accompanying drawing Other objects. and advantagesof my invention will be referred to and pointed out .in the detaileddescription thereof which follows or'will be apparent from'such de'scription.

In order thatmy inventionmay more readily understood and its practicaladvantages more fully appreciated, reference in" which jI haveillustratedone .formyof mechanical embodiment. of myinvention,

but it will be understood that thesame is susceptible. of embodiment'inother forms of construction than that shown within the j' scope of theclaims. 1 In'the drawing J F'gure- 1is a view in top .of'asewingma-chine head and of the. driving mecha- 7 partially broken away inorder to show the Fig. 2 is aview 1n nism for driving "and operating thesame,

such mechanism .being shown partly in horizontal section, the table.uponwhich the sewing machine .head is supported being drivingmechanism.

ing the manner in which: the'idriving mechanism is drivenandoperated andindicat Ting theta single driving means'may operate a r r hty f th e i trieg eehe i m v 0 2 n 31s a, transverse s ti View taken on the line 3-3of Fig, 1, l i j Referring to the drawing lfdesignates a table top orother similar support for supporting the sewing machine 2 or othermachine which may be driven and operated by the operating mechanism. 3designates apulley provided with a hub 4 whichis mounted in a bearin 5formed by coiiperating parts of the twln brackets 6 and 7' which aresecured to the underneath side of the table 1 by means of supportingbolts 10. The pulley preferably is provided with flanges 11 forming agroove in which the endless driving belt 12 runs to drive the saidpulley. p

In Fig. '2 I have indicated a couple of these pulleys 3, but it will beunderstood that the number may be increased as desired because inpractice a number of machines preferably driven by a single endlessdriving belt such as 12.

15 designates a driving friction disk whlch is secured upon one end of abar 16 having slidable engagement with the pulley 3' and its hub 4. Thesaid bar is, in the construction shown, connected with the pulley 3 andits hub 4 to rotate therewith by means of a spline pin 17 The disk 15 isadapted to engage the periphery of a friction disk 20', preferablyoffiber, whichis adjustably securedfto a driving shaft 21 mounted inbearings 22 upon the brackets 6 and 7.

r 'The shaft 21 is provided with a grooved pulley 25 over which adriving belt 26 operates to drive a pulley 27 secured upon the fdrivingshaft of the sewing machine 2. By

meansof 'a coiled spring 30 which is coiled "around the outer projectingend of the bar 16, one end of which bears against a flange or collar 31upon the said bar and the other end-of which against the outer end ofthe hub 4, the bar 16 and the disk 15 secured thereon are held in theiroutermost positions. When in this position, .the disk side elevationshow 1 15 does not contact with the friction disk 20. As a result thepulley and the disk 15 having operative connection therewith as shaft 21upon which it is supported.

In order'that the bar 16 may be caused to as We 4 1 9 1 2 12 e the P -a3 described may and do rotate, but without 7 efie'c't upon the frictiondisk 20 and the in opposition to the spring 30 for the purpose ofcausing the disk 15 to engage the friction disk 20, I have providedalever 34, pivotally supported intermediate its ends at 35 upon aprojection 36 from the bracket 7 One end portion 38 of said lever is inengagement with the outer end of the bar 16, as clearly shown in Fig. 1of the draw ing. The portion of said lever '34 on the opposite side ofthe pivot 35 is engaged by the upper end 40 of the upwardly extendingarm of'a bell crank lever 41 which is pivoted at 42. The other arm ofsaid lever extends horizontally and constitutes a foot treadle 43 by-means of'which the lever 41 maybe moved pivotally to operate the lever34 to effect sliding movements of the bar 16 to effect engagement anddisengagement of the 7 disk 15 with and from the friction disk 20.

In order to automatically brake the shaft 21' when the disk 15 isdisengaged from the friction disk 20, I have provided the outerendportion of the lever 34 with an nwardly extending, projecting portion45,wh1ch,when

- moved inwardly, by the action of the spring 30 moving the end portion38 thereof outwardly, engages the outer end of a friction rod 46supported in bearings 47 upon the bracket 7. The inner end of said.friction rod is provided with a friction member 50 which is adapted tocontact with a brake disk 51 securedupon the shaft'21.

a so that the latter is driven, causing rota-1 Aspring 52 interposedbetween the outer bearing 47 and a laterally extending lug 53 upon theouter end of said friction rod tends to hold the said: rod in outerposition with the friction member 50 out of contact with the frictiondisk 51; Consequently when downward pressure is exerted upon the treadle43 to cause outward swinglng movement of the upwardly extending arm ofthe bell crank 41 to cause outward swinging movement of the end of thelever 34 and inward swinging movement of the end 38 thereof, it isapparent that the. spring 52 will cause outward sliding movement of thefriction rod 46 to disengage the friction member from the friction disk51. Simultaneously, the disk 15 -is moved into engagement with thefriction disk20 tion of the shaft 21 to drive and operate the machine 2,whether it be a sewing machine or some other character of machine.

Inthe construction shown, the belt 12 is caused bymeans of the idlerrollers to extend partially around the pulleys 3. An

idler roller 61 holds one side or span of the belt in spaced relationwith respect to the pulleys. The belt 12 is driven by'means of a drum ordrive wheel 62, preferablymotor; suitable power may driven. Howevenanybe employed. Y a

In order to take-up the slack of the belt 12, I have provided anidlerpulley 63supported upon swinging, weighted, take-up arms 64. The weightis shown at 65.

It is apparent that the spring 30 is stronger than the spring 52 so thatwhen pressure is removed from the treadle 43 the expansive force of thespring 30 causes pivotal movement of the lever 34 in opposition to thespring 52 to cause inward movement of the friction rod 46 to apply thebrake 50 and thus quickly stop the operation of the machine.

7 It will be understood that any other preferred arrangement of thedriving belt 12 with respect to the pulleys 3 for driving the latter maybe employed.

By adjusting the friction disk 20 along the shaft 21' so that itsposition with rep 1. In drivingmechanism," in combination, a pulley,means for drlvmgthe same, a bar extending axially through the saidpulley, said bar being slidable, means for causing rotation of said barwith the 'said pulley, a

. shaft, means wherebyrotation of said pulley and bar causes rotation ofsaid shaft, means for causing slidable movement of the said bar throughsaid pulley, a brake for controlling rotation ofisaid shaft, and meanswhereby movement of the last mentioned means operates to control thesaid brake.

2. In driving mechanism, in combination, a driving disk, means forcausing rotation .ofsaiddisk, a driving shaft, a frictiondisk mounted onsaid .shaft, a brakeidisk also mounted on said shaft, means forengagingand disengaging the said driving disk with and from the said frictiondisk, a brake and means for simultaneously disengaging the same fromsaid brake disk as the driv ing disk isjmoved into engagementrwith thesaid friction disk. and for moving the same into engagement with saidbrake disk-when V the said. driving. disk is moved out of .en-

gageme'nt with said friction disk.

. 3,,In driving mechanism, in combination, a driving disk, means forcausing rotation of said'driving disk,a driving shaft, a frictiondiskmounted upon said shaft which is adapted to be engaged by the saiddriving disk, a brake disk also ,mountedon said driving shaft, meansfor. normaly holding the said driving disk out of engagement with thesaidfriction disk, means forjmoving said driving disk into engagementwith the said friction disk, a brake and means adapted to be actuated bythe last mentioned means for applying said brake to said brake disk upondisengagement of the said drivin disk from the said friction disk. 7

4. In driving mechanism, in combination, a pulley, means for causingrotation of said pulley, a bar slidably supported in an aXial openingthrough said pulley, means for causing rotation of said bar with saidpulley, a driving disk supported upon the inner end of said bar, adriving shaft, a friction disk supported upon said shaft and adapted tobe engaged by the said driving disk, means whereby said friction diskmay be adjusted so as to position the same nearer to or farther from theaxis of rotation of said driving disk, a brake disk also supported uponsaid driving shaft, a spring normally holding the said driving disk outof engagement with the said friction disk, a brake adapted to be appliedto the said brake disk, a lever pivoted intermediate its ends, means forcausing pivotal movement of the said le- I ver, one end of said leverbeing in engagement with the said bar so that swinging movement of saidlever causes sliding movement of said bar to effect engagement anddisengagement of the said driving disk with and from the said frictiondisk, and means intermediate the opposite ends of said lever.

and the said brake whereby swinging movements ofsaid lever also operateto control the application of said brake to the said brakedisk,substantially as described.

" 5. In driving mechanism, in combination,

a plurality of pulleys arranged in series, a driving disk supported uponand driven by each of said pulleys, a plurality of driving shafts, meanswhereby the said driving shafts are driven from the respective drivingdisks, means whereby any one of said driving disks may be operativelydisengaged from the said shafts without affecting any one of the otherof said shafts, and a common driving means for driving all of saidpulleys, substantially as described.

6. In driving mechanism, in combination, a plurality of driven devlcesarranged in series, a driving disk supported upon and driven by each ofsaid devices, a plurality of driving shafts, means whereby the saiddriving shafts are driven from the respective driving disks, and acommon driving means for driving all of the said driven devices.

7 In driving mechanism, in combination, a plurality of driven devicesarranged in series, a driving disk supported upon and driven by each ofsaid devices, a plurality of driving shafts, means whereby the saiddriving shafts are driven from the said driving disks, means whereby anyone of said driving disks may be operatively disconnected from the saidshafts without alfecting any one of the other said shafts, and avcommondriving means for driving all of said driven devices.

8. In driving mechanism, in combination, a plurality of pulleys arrangedin series, a driving disk supported upon and driven by each of saidpulleys, a plurality of driving shafts, means whereby the said drivingshafts are driven from the respective driving disks, and an endlessdriving belt engaging with and driving all of said pulleys.

In testimony that I claim the foregoing as my invention, I have hereuntoset my name this 25th day of October, A. D. 1918.

MEYER AXILROD.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

